LG's first Push-To-Talk (PTT) phone. Ths clamshell CDMA model features a unique design with a prominent speaker for making PTT calls with the flip open or closed. VX-4650 lacks PTT.

Half of American teenagers get 4 hours or more of daily screen time and are more likely to experience anxiety and depression, a report found.

book-like ones that open up to reveal a bigger tablet-sized screen; and clamshell-like ones, which typically house an at-a-glance cover display, but then can be flipped open (hence 'flip phones ...